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"Technology didn't slow us down getting to the moon," Steltzner said. "Technology won't slow us down getting to Mars."

Mars may be one of the closest planets humans want to colonize, but it certainly isn't the only one. Mae Jemison described the 100-Year Starship project to an interested audience. Funded by NASA's Ames Research Center and the Defense Advanced Research Projects Agency (DARPA), the 100-Year Starship project aims to develop the tools and technology necessary to build and fly a spaceship to another planetary system within the next 100 years. The program isn't necessarily concerned with building the ship itself as much as it seeks to foster innovation and enthusiasm for interstellar travel.

Though many people object to funding the space program when there are humanitarian needs that have to be met on Earth, Jemison points out that such exploration often leads to innovation and unexpected technology that make an impact on Earth-based programs. "I believe that pursuing an extraordinary tomorrow will create a better world today," she said.

More than one-third of Egypt’s population of eighty million remains illiterate, and just 25 percent of Egyptians use the Internet. However, Facebook and Twitter were instrumental in organizing, motivating, and directing these crowds as to where to go and what to do. Egypt’s revolution was created as an event on Facebook eleven days in advance. People clicked “I’m attending.” Certainly, this was a people’s revolution, yet one based on and accelerated in many ways by the Internet. What happened in Tahrir and every square in Egypt was the accumulation of years and years of activism, including Internet activism. Social media prepared Egyptians for the revolution and enabled them to capitalize on an opportunity for change when the time came.

Internet activism started in Egypt with the appearance of Web 2.0 technology in the country around 2003

Blogging was the first valuable brainchild of Web 2.0 technologies.

The phenomenon exploded in the Arab world, with Egyptian bloggers pioneering and leading the scene. Blogger numbers in the region approached half a million by the beginning of 2009, the great majority of them coming from Egypt.

Political blogging in particular became more popular, as users felt that they could remain anonymous if they so wished

Nevertheless, most Egyptian political bloggers choose to blog under their real names, which frequently got them in trouble with the regime. The state security crackdown on bloggers was testimony to their potential impact.

As blogging was becoming a phenomenon in Egypt, some political movements started having a strong on-line presence, and taking to the streets based on their on-line organization. The most important was probably the Kefaya movement, whose formal name is The Egyptian Movement for Change. The movement was established in 2004 by a coalition of political forces, and became better known by its Arabic slogan. The word kefaya is Arabic for ‘enough,’ and as the name implies, the movement called for an end to the decades-old Mubarak regime, and for guarantees that his son would not succeed him as president. Kefaya was instrumental in taking people to the streets, thus bridging the gap between the on-line and the off-line worlds. Many of its supporters were bloggers, and many of the street protesters started blogging. So, increasingly, reports on the demonstrations found their way into blogs and were provided media coverage even when the traditional media ignored them or were afraid to cover them. One result was that many more Egyptians gained the courage to write blogs that openly criticized the authoritarian system and crossed the ‘red line’ of challenging their president.

hey were also capable of videotaping street protests and uploading the clips on YouTube. Watching people chanting “Down with Hosni Mubarak” in the mid-2000s was a totally new, riveting experience, which led many other brave Egyptians to join these demonstrations. Internet activists and blogger stars such as Wael Abbas, Alaa Abdel Fattah, Manal Hassan, Hossam El-Hamalawy, Malek Mostafa, and others uploaded hundreds of videos of police brutality, election rigging, and different violations of human and civic rights.

The structure of social media taught Egyptians that space exists that you can call your own, your space, where you can speak your mind. To many in the West, this is probably no big deal. There are countless venues where they can express their opinions relatively freely. But for people in Egypt, and in the Arab world in general, this was a new phenomenon, and one I believe to be of profound importance.

horizontal communication.’ Before social networks, Egyptian youth were accustomed to being talked at, rather than talked to or spoken with. Communication was mostly vertical, coming from the regime down to everyone else

Authoritarian patterns of communication do not allow for much horizontal interaction. But social networks do, and eventually their existence on the Internet taught Egyptian youths a few lessons in democratic communication, even if the essence of the conversations carried out was not necessarily political in nature.

The bulk of those that I believe were affected by these lessons in democratic expression were clusters of the population that were not previously politically oriented. These form a good sector of those who took to the streets on January 25, and were joined by millions who held their ground in Tahrir Square and in every square in Egypt until Mubarak was toppled. The majority of these millions, including myself, were people who had never participated in a demonstration before. They were not political activists before January 25, but they saw or heard the call for action, and it touched a nerve as they found safety in numbers

he knew it was too much to ask people to join in the protest, so she simply asked them to participate in spirit by staying home that day, not going to work, and not engaging in any monetary transactions such as buying or selling. The group was brought to the attention of the traditional media and was featured on one of Egypt’s popular talk shows, thus getting more exposure. What ensued surpassed all expectations. To Abdel Fattah’s own surprise (and everyone else’s), the Facebook group immediately attracted some seventy three thousand members. Many of these, and others who got the message through traditional media, decided to stay home in solidarity with the workers. Others were encouraged to stay home by a bad sandstorm that swept across parts of Egypt that day, and yet others stayed home for fear of the strong police presence on the streets.

The April 6 event was meaningful because it provided a sense that people were actually willing to take an action, to do something beyond clicking a mouse

three months before the January 25 revolution, Malcolm Gladwell argued in a much-discussed article in The New Yorker under the title “Small Change: Why the revolution will not be tweeted” that social media can’t provide what social change has always required. He said that social media is good when you’re asking people for small-scale, low-risk action, but not for anything more. “Facebook activism succeeds,” he wrote, “not by motivating people to make a real sacrifice but by motivating them to do the things that people do when they are not motivated enough to make a real sacrifice.” He explained that this is because high-risk activism is a “strong-tie phenomenon,” meaning that those who carry out such acts of activism have to personally know each other well and develop strong personal ties before they would risk their lives for each other or for a common cause. Since Facebook and Twitter provide mostly “weak-tie” connections, since users typically have a strong off-line social tie with only a small percentage of their ‘friends’ or ‘followers,’ these social networks were therefore not capable of motivating people for a high-risk cause. He therefore concluded that a social network “makes it easier for activists to express themselves, and harder for that expression to have any impact.”

nowing that you are in the company of many who share your utter belief in the same cause. That is something that social networks delivered

ne of the Facebook pages that played a major role in this regard was the Khaled Said page. Khaled Said was a young Egyptian who was brutally beaten to death by police informants outside an Internet café in Alexandria in June 2010. He had an innocent face that everyone could identify with. He could be anyone, and anyone could’ve been him. The Facebook page “We Are All Khaled Said” appeared shortly thereafter. It started asking its members, whose numbers increased steadily, to go out on silent standing protests in black shirts with their back to the streets. The demonstrations started in Alexandria and soon spread to every governorate in Egypt. Numbers increased with every protest. More and more people gained a little more courage and tasted the freedom of dissent.

The administrators usually polled their users, asking them to vote for their place or time of preference for the next protest. The responses would be in the thousands, sometimes tens of thousands, and the administrators would read them all, and give a breakdown, with exact numbers and percentages, of the votes.

The January 25 demonstration was motivated and aided by an important intervening variable, the revolt in Tunisia. When Tunisian protesters succeeded in ousting President Zine El-Abidine Ben Ali on January 14, Egyptians felt that toppling a dictator through demonstrations was finally possible.

he Khaled Said page, which by then had about six hundred thousand followers, demonstrated its strong ability to organize. They listed all the major squares in every Egyptian governorate where they expected people to gather, and again gave specific instructions on what to wear, what to take with you, and who to contact in times of trouble. They then alerted the users that the listed venues for demonstration would change at midnight on January 24 to give police forces a lesser chance of mobilizing against them the next day. On the morning of January 25, there were close to half a million people who had clicked “I’m attending” the revolution. Today, the Khaled Said page has more than 1.7 million users, by far more than any other Egyptian Facebook page.

nd indeed that was what happened. We witnessed another key moment illustrating the power of the interaction between social media, traditional media, and interpersonal communication. Newspapers, broadcasters, and on-line outlets had been discussing the potential ‘Facebook demonstration’ for a few days prior to January 25. As groups of demonstrators marched through the streets enroute to main squares chanting “Ya ahalina endamo lina,” (“Friends and family, come join us”), people watching from their balconies and windows heeded the calls and enabled the protests to snowball to unprecedented numbers. People were galvanized by the sight. The core activists, who attended every demonstration for years, were suddenly seeing new faces on January 25, mostly mobilized by the Internet. They came by the thousands, and then by the hundreds of thousands, numbers larger than anyone had expected.

When the Egyptian regime belatedly realized on January 25 how dangerous social networks could be to its survival, the first thing it did was block Twitter. Internet censorship is a ridiculously ineffective strategy, though. Users were tech-savvy enough to find their way onto proxy servers within minutes, and to post on Facebook how to gain access to Twitter and how to remain on Facebook if the regime blocks it, which indeed happened later. The government felt it didn’t have any other option but to block all Internet access in the country for five days starting January 27 (as well as mobile telephone communications for one day). By then it was too late. People had already found their way to Tahrir and nearly every square in Egypt. Ironically, some were partly motivated by the Internet and communication blockage to take to the streets to find out what was happening and be part of it. And they were joined by workers’ movements in many governorates that expanded the protester numbers into the millions. The major squares of Egypt were full of people of every age, gender, religion, creed, and socio-economic status

Gladwell, it turned out, was wrong. These people didn’t know each other personally, but the “weak” personal ties had not proved a barrier to high-risk activism. Egyptians discovered the strong tie of belonging to the common cause of ousting a dictator

ocial network users were not the only ones revolting, and social networks were not the only reason or motivation for revolt. However, the role that social media have played over the years in indirectly preparing sectors of Egyptian youths for this moment, and in enabling them to capitalize on an opportunity for change when the time came, cannot be understated.  It can also be said that the role of social networks in Egypt has hardly ended. The revolution is not yet complete. 

“Radio is a very unusual media form in that most of its revenue comes from the local market,” said Rich Tullo, director of research at New York brokerage Albert Fried & Co. “The ad rates are higher because it’s local. Ultimately, it will take dollars away from other radio stations.”

72.7 million active monthly users.

For those who listen to Pandora on their smartphones or laptops, they’re prompted to enter their ZIP code, year of birth and gender. Users can select the artists’ music they want to hear, and Pandora adds similar music.

“We have one-fourth the number of ad units that a traditional FM station has, so your ad will stand out more,”

Pandora has yet to post an annual profit.

has more than 70 percent market share in the U.S. Internet music segment,

St. Louis radio station managers say they haven’t seen a decline in their ad revenue since Pandora entered the market, but they’re watching the new competitor closely.

And some researchers have even higher hopes for solar sails, suggesting that a truly enormous sail —one the size of Texas, for example — could send a spaceship to another star system in just a few centuries. (A space-based laser would have to shine a powerful beam on the sail as the craft moved farther and farther away from the sun, however.)   

Several upcoming missions aim to harness the subtle push of sunlight, using gossamer "solar sails" to cruise through the heavens like boats through the sea.

A spacecraft equipped with a sail 1,300 feet (400 meters) wide, for example, could travel 1.3 billion miles (2.1 billion kilometers) per year, allowing it to escape the sun's sphere of influence in just a decade or so, according to researchers behind the Interstellar Probe, a NASA concept mission proposed about 15 years ago.

Cool sells. And if and when something goes wrong people root for the company to fix the problem so they can see cool things again.

"It's true that everybody is doing all of this, and that's how the system works," Chester said. "But this is unprecedented. Given Facebook's scale, this is a dramatic expansion of its spying on users."

He said that Facebook, in particular, has become skilled at reading what people understand about online privacy and figuring out how to gradually expand its data collection efforts in ways that will tamp down criticism.

“If children grow up seeing thin women in advertisements, on television, and in film they accept this as reality and try to imitate their appearance and their actions”(Nature vs. Nurture, Shea, 1).

“The ideal female has become thinner while the average American woman has become heavier…”(Domil, 2).

The media is only going to get worse and put more pressure on the self body image of how it should “ideally” look